Coupling self-locking hook



FIG. 1 is a front elevation view thereof.

FIG. 2 is a rear elevation view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of a coupling self-locking hook showing mynew design.

FIG. 8 shows the present invention in condition of use; and,

FIG. 9 shows the present invention in another condition of use.

The broken line showing of environmental structure is for illustrativepurposes only and forms no part of the claimed design.

I claim the ornamental design for a coupling self-locking hook, as shownand described.